We aimed to explore the effects of different types of light color(i.e., A₁, white light; A₂, blue light; A₃, red light), photoperiod (i.e., B₁, 24L, 0.88 W/m²; C₂, 4.55 W/m²; C₃, 8.60 W/m²) on the growth performance and feeding of Atlantic salmon () with initial body weights of 850.97±82.77 g for 180 days in recirculating aquaculture systems (RAS) using orthogonal test methods. Nine treatment groups were designed in the present experiment: A₁B₁C₁(group1), A₁B₂C₂(group2), A₁B₃C₃(group3), A₃B₃C₂(Group4), A₂B₂C₃(group5), A₂B₃C₁(group6), A₃B₁C₃(group7), A₃B₂C₁(group8), and A₁B₁C₁(group9). The results showed that the highest survival rate was found in red light, 12L at the end of the trial, and no significant difference was observed in the survival rates of the experimental groups (>0.05). There were no significant differences in relative weight gain and condition among the nine groups at each sampling time (>0.05). At day 120, the specific growth rate of body length for groups 2, 5 and 6 were significantly higher than those of group 1 (<0.05). At day 180, the specific growth rate of body weight in groups 1, 2, 4, 7 and 8 were significantly higher than those of group 6 (<0.05), and the daily weight gain of groups 1, 2, 3, 4, 7, 8 and 9 showed higher variation than those of group 6 (<0.05). Additionally, the plasma growth hormone in group 9 was a higher concentration than that of groups 1, 2, 3, 4, 6, 7 and 8 (<0.05). Better food intake(FI), food conversion efficiency(FCE) and food conversion ratio(FCR) were also observed in red light (12L at the end of the experiment, while light color, photoperiod and light intensity had no significant effects on the FI, FCE and FCR between groups(>0.05). Hence, red light (12L is considered to be a suitable combination of artificial lighting under the experimental conditions described herein.